body{
			margin: 0px;
			background-image: url(../img/背景2.jpg);
		}
		.td1{
			border: 1px solid #FFFFFF; width: 30%;height: 40px;
			text-align: center;background-color:#BCE8F1 ;
		}
		.td2{
			border: 1px solid #FFFFFF;
			text-align: center;background-color:#FFFFFF ;
		}
		.td3{
			border: 1px solid #FFFFFF;width: 30%;height: 80px;
			text-align: center;background-color:#BCE8F1 ;
		}
		.td4{
			border: 1px solid #FFFFFF;width: 30%;height: 300px;
			text-align: center;background-color:#BCE8F1 ;
		}